make search name a macro

main.c

@@ -13,6 +13,8 @@
 #define debug(...)
 #endif
 
+#define SEARCH_NAME "data"
+
 static int reads_counter = 0;
 static int fit_offset = 0;
 
@@ -210,7 +212,7 @@ static int fdt_dump_node_data(char * fdt, char * strings, const char *outname, c
 {
 	int data_offset = 0;
 	int data_len = 0;
-	if (fdt_node_get_prop(filename, fdt, strings, offset, "data", &data_offset, &data_len))
+	if (fdt_node_get_prop(filename, fdt, strings, offset, SEARCH_NAME, &data_offset, &data_len))
 		return -1;
 
 	char * data = malloc(data_len);